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Vishay General Semiconductor - Diodes Division P6SMB6.8A-M3/52
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- Part No.:
- P6SMB6.8A-M3/52
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
P6SMB6.8A-M3/52.pdf
- Description:
- TVS DIODE 5.8VWM 10.5VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,606
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Product details
Overview
P6SMB6.8A-M3/52 from Vishay General Semiconductor is a unidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, designed for clamping voltage transients on power and signal lines. It features a 6.45 V minimum breakdown voltage (VBR), 5.80 V standoff voltage (VWM), 10.5 V maximum clamping voltage at 57.1 A peak pulse current, 600 W peak pulse power rating (10/1000 µs), and 1000 µA max reverse leakage at VWM. It protects MOSFETs, ICs, and sensor interfaces in industrial power supplies.
For engineers reviewing the P6SMB6.8A-M3/52 datasheet, P6SMB6.8A-M3/52 pinout, P6SMB6.8A-M3/52 application, or P6SMB6.8A-M3/52 equivalent, key selection criteria include unidirectional polarity, 600 W surge capability, 10.5 V clamping performance under 57.1 A transient, SMB package thermal resistance (RθJA = 100 °C/W), and halogen-free RoHS compliance per M3 suffix.
Technical Context
This TVS diode operates as a voltage-clamping protection device that enters avalanche conduction when reverse voltage exceeds its breakdown threshold (6.45–7.14 V). Its low incremental surge resistance ensures minimal voltage overshoot during fast transients, while glass-passivated junction enhances reliability under repetitive surge stress.
Designed for 10/1000 µs waveform compliance with 0.01% duty cycle, it delivers stable clamping up to 150 °C junction temperature and meets J-STD-020 MSL Level 1 moisture sensitivity with 260 °C reflow peak. The cathode band identifies polarity for correct PCB orientation in unidirectional configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/max) | 6.45 V / 7.14 V - defines precise avalanche initiation range for reliable overvoltage triggering |
| VWM | 5.80 V - maximum continuous reverse operating voltage before leakage rises significantly |
| VC @ IPPM | 10.5 V at 57.1 A - clamped voltage seen by protected circuit during worst-case 600 W transient |
| PPPM | 600 W - peak pulse power handling capacity under standardized 10/1000 µs surge waveform |
| ID @ VWM | 1000 µA - reverse leakage current at standoff voltage, critical for low-power sensor line integrity |
| RθJA | 100 °C/W - junction-to-ambient thermal resistance determines derating above 25 °C ambient |
| Package | SMB (DO-214AA) - industry-standard surface-mount outline with 0.205" × 0.220" footprint and 0.030" lead pitch |
Pinout & Package
SMB (DO-214AA) package: molded plastic case with matte tin-plated leads, UL 94 V-0 flammability rating, and polarity indicated by cathode band. Mounting requires 0.2" × 0.2" (5.0 mm × 5.0 mm) copper pads per terminal per datasheet fig. 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal (reverse-biased during protection) | Connected to lower-potential side of protected line; enables unidirectional clamping to ground |
| Cathode | Avalanche conduction terminal (marked with band) | Connected to higher-potential side (e.g., VCC or signal line); conducts surge current to ground path |
Key Features
| Feature | Design Value |
|---|---|
| 600 W peak pulse power (10/1000 µs) | Enables robust protection against IEC 61000-4-5 Level 4 surges without degradation |
| 10.5 V clamping voltage at 57.1 A | Limits voltage stress on downstream 5 V logic or analog front-ends during surge events |
| Glass passivated chip junction | Improves long-term stability and surge endurance versus epoxy-passivated alternatives |
| Halogen-free, RoHS-compliant (M3 suffix) | Meets environmental compliance requirements for industrial and automotive supply chains |
| MSL Level 1, 260 °C reflow compatible | Supports standard SMT assembly without pre-baking or special handling |
Applications
| Industrial Power Supply Input Protection | Automotive Sensor Signal Line Protection |
|---|---|
Use Scenario: Protects 5 V DC input rails in programmable logic controllers (PLCs) against inductive switching transients from relay coils and solenoids. IC Role / Device Role / Timing Role: Unidirectional TVS clamps positive-going surges to ground, preventing latch-up or damage to upstream DC/DC converters and microcontrollers. Use Value: 10.5 V clamping ensures protected 5 V rail stays below absolute maximum ratings of connected ICs during 600 W transients. |
Use Scenario: Shields LIN bus or analog sensor outputs (e.g., pressure, temperature) in engine control modules from load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Fast-response avalanche diode diverts sub-100 ns transients before they propagate into precision ADC inputs or CAN/LIN transceivers. Use Value: 6.45–7.14 V breakdown aligns with 5 V system margins, enabling early clamping before sensor IC damage thresholds are exceeded. |
| Consumer Device USB Port ESD Protection | Telecom Equipment DC Bias Line Protection |
Use Scenario: Installed on VBUS and D+/D− lines of USB 2.0 ports in set-top boxes and smart displays to suppress contact ESD per IEC 61000-4-2 ±15 kV. IC Role / Device Role / Timing Role: Acts as primary-level transient shunt, absorbing energy before secondary protection (e.g., polymer PTC + capacitor) filters residual noise. Use Value: Low 1000 µA leakage at 5.8 V standoff preserves USB enumeration integrity and prevents false disconnects. |
Use Scenario: Guards bias feed lines powering RF amplifiers or optical transceivers in base station radios exposed to lightning-induced surges on outdoor cabling. IC Role / Device Role / Timing Role: Unidirectional TVS placed between DC supply and RF stage isolates high-voltage transients while maintaining low insertion loss at RF frequencies. Use Value: SMB package's low parasitic capacitance (<100 pF typical at 0 V) avoids signal distortion on multi-GHz bias paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ6.8A | Same SMB package, identical VBR (6.45–7.14 V) and VC (10.5 V), but rated for 400 W PPPM vs. 600 W | Lower surge margin limits use in high-energy industrial environments; suitable only where IEC 61000-4-5 Level 3 is sufficient | Select SMAJ6.8A only if system-level testing confirms 400 W withstand capability and cost optimization is prioritized |
| 1.5SMC6.8A | Higher-power SMC package (7.1 mm × 6.2 mm), same electrical specs, 1500 W PPPM, RθJA = 30 °C/W | Requires larger PCB area and different pad layout; better thermal performance allows sustained surge repetition | Choose 1.5SMC6.8A when board space permits and thermal management of repeated transients is critical |
Compared with SMAJ6.8A and 1.5SMC6.8A, P6SMB6.8A-M3/52 delivers optimal balance of 600 W surge capability, SMB footprint compatibility, and halogen-free compliance-making it ideal for space-constrained industrial and automotive designs requiring validated AEC-Q101-grade variants (HE3/HM3).
Availability
P6SMB6.8A-M3/52 is available at Aetrix Electronics and suitable for industrial power supplies, automotive sensor modules, consumer USB interfaces, and telecom DC bias lines requiring stable component supply with halogen-free compliance and MSL Level 1 reflow readiness.
Supply support for P6SMB6.8A-M3/52 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, and protection devices with emphasis on reliability, surge robustness, and automotive qualification.
The P6SMB Series targets high-reliability transient suppression in harsh environments, with design focus on industrial automation, automotive electronics, and telecom infrastructure where consistent clamping performance and long-term stability are mandatory.
FAQ
What is the breakdown voltage tolerance of P6SMB6.8A-M3/52?
The P6SMB6.8A-M3/52 has a specified breakdown voltage range of 6.45 V to 7.14 V at 10 mA test current (IT). This ±5% tolerance ensures predictable avalanche initiation across manufacturing lots and temperature ranges, critical for consistent protection timing in 5 V systems where exceeding 7.14 V could risk downstream IC damage.
Does P6SMB6.8A-M3/52 meet automotive qualification standards?
The base P6SMB6.8A-M3/52 is commercial-grade and halogen-free RoHS-compliant, but not AEC-Q101 qualified. For automotive use, Vishay offers the P6SMB6.8AHM3_B variant (with "_B" suffix), which adds AEC-Q101 qualification while retaining identical electrical specs and SMB packaging-ensuring drop-in reliability for engine bay and chassis applications.
How does the clamping voltage of P6SMB6.8A-M3/52 compare to its standoff voltage?
P6SMB6.8A-M3/52 has a 5.80 V standoff voltage (VWM) and a maximum clamping voltage (VC) of 10.5 V at 57.1 A. This 4.7 V differential provides a safe margin above the 5 V nominal rail while limiting transient overshoot to levels compatible with standard 5 V logic ICs' absolute maximum ratings-preventing latch-up or gate oxide damage during surge events.
What is the thermal resistance of P6SMB6.8A-M3/52 and how does it affect derating?
P6SMB6.8A-M3/52 has a typical junction-to-ambient thermal resistance (RθJA) of 100 °C/W when mounted on 0.2" × 0.2" copper pads. Above 25 °C ambient, its peak pulse power must be linearly derated per Figure 2 in the datasheet-e.g., at 75 °C ambient, maximum PPPM drops to ~400 W-to maintain junction temperature ≤150 °C and avoid thermal runaway during repetitive surges.
Can P6SMB6.8A-M3/52 be used in bidirectional configurations?
No-P6SMB6.8A-M3/52 is strictly unidirectional, as indicated by the "A" suffix and cathode band marking. For bidirectional protection, Vishay specifies the P6SMB6.8CA variant (with "CA" suffix), which has symmetric breakdown in both directions and no polarity marking. Using P6SMB6.8A-M3/52 in reverse-biased signal paths would result in forward conduction and failure.
P6SMB6.8A-M3/52 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- P6SMB, TransZorb®
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.8V
- Voltage - Breakdown (Min):
- 6.45V
- Voltage - Clamping (Max) @ Ipp:
- 10.5V
- Current - Peak Pulse (10/1000µs):
- 57.1A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
P6SMB6.8A-M3/52 FAQ
1.How can I place an order for P6SMB6.8A-M3/52 through Aetrix?
Please submit a Request for Quotation (RFQ) for P6SMB6.8A-M3/52 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for P6SMB6.8A-M3/52 reliable?
The price and inventory of P6SMB6.8A-M3/52 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P6SMB6.8A-M3/52 is usually 5 days.
3.What payment methods are accepted for P6SMB6.8A-M3/52?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P6SMB6.8A-M3/52 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P6SMB6.8A-M3/52?
P6SMB6.8A-M3/52 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P6SMB6.8A-M3/52 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for P6SMB6.8A-M3/52?
For technical support, including P6SMB6.8A-M3/52 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P6SMB6.8A-M3/52 requirements.
6.How does Aetrix verify that P6SMB6.8A-M3/52 is sourced from the original manufacturer or authorized distributors?
All P6SMB6.8A-M3/52 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that P6SMB6.8A-M3/52 meets industry standards.
7.What is the process for return or replacement of P6SMB6.8A-M3/52?
All P6SMB6.8A-M3/52 units undergo pre-shipment inspection (PSI). If there is an issue with P6SMB6.8A-M3/52, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The P6SMB6.8A-M3/52 part is unused and in its original packaging.
Return procedure for P6SMB6.8A-M3/52:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
P6SMB6.8A-M3/52 Tags
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